Pengaruh Temperatur Hidrotermal Pada Proses Sintesis Li4ti5o12 Nanowire Terhadap Performa Elektrokimia Baterai Ion Lithium

Saka, Wira Rosadi May (2016) Pengaruh Temperatur Hidrotermal Pada Proses Sintesis Li4ti5o12 Nanowire Terhadap Performa Elektrokimia Baterai Ion Lithium. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Pada penelitian ini telah berhasil dilakukan sintesis Li4Ti5O12 dengan menggunakan prekusor TiO2 anatase dan NaOH melalui metode hidrotermal. Penelitian ini dilakukan dengan menggunakan variasi temperatur hidrotermal, yaitu 180oC, 200oC, dan 220oC dan waktu holding 18 jam. Hasil uji X-Ray Diffaction (XRD) menunjukkan bahwa terbentuk dua fasa Li4Ti5O12 dan TiO2 yang sesuai dengan JCPDS No.00-49-0207. Dari uji Scanning Electron Microscope (SEM) terlihat struktur morfologi Li4Ti5O12 berupa nanowire dengan panjang 1 μm-5 μm dan diameter 11 nm-60 nm. Hasil uji performa elektrokimia menunjukkan bahwa material Li4Ti5O12 memiliki nilai kapasitas spesifik terbesar pada temperatur 200oC yang nilainya sebesar 93.222 mAh/g. Hal ini menunjukkan bahwa sampel dengan temperatur 200oC memiliki nilai ketahanan kapasitas paling baik, karena memiliki nilai kapasitas spesifik paling tinggi. Pada uji Electrochemical Impedance Spectroscopy (EIS), nilai Rct terendah terdapat pada temperatur 220oC sebesar 55.2 Ohm. Hal ini tidak bersesuaian dengan hasil uji XRD, dimana seharusnya sampel dengan temperatur 200oC yang memiliki nilai Rct terendah. Namun, secara keseluruhan, anoda Li4Ti5O12 dengan temperatur hidrotermal 200oC memiliki potensi besar sebagai material anoda untuk baterai ion lithium. =========================================================== In this research has been successfully synthesized Li4Ti5O12 by using a precursor TiO2 anatase and NaOH through hydrothermal method. This research was conducted using hydrothermal temperature variation, ie 180oC, 200oC and 220oC and with the holding time to 18 hours. The result of X-Ray Diffaction (XRD) showed that the two phases are formed Li4Ti5O12 and TiO2 corresponding to JCPDS No.00-49-0207. From the test of Scanning Electron Microscope (SEM), Li4Ti5O12 has visible morphological structure in the form of a nanowire with a length of 1 μm-5 μm and a diameter of 11 nm-60 nm. The test results show that the electrochemical performance of the material Li4Ti5O12 have the greatest specific capacity values at a temperature of 200oC with a value of 93.222 mAh/g. This shows that the samples with temperature 200oC have good resistance values in the highest capacity, because it has the highest specific capacity. On the test of Electrochemical Impedance Spectroscopy (EIS), the lowest Rct values are at a temperature of 220oC for 55.2 Ohm. This is inconsistent with the test results of XRD, which is should sample at 200oC temperature that has the lowest Rct value. However, overall, the anode Li4Ti5O12 with hydrothermal temperature 200oC has great potential as an anode material for lithium ion batteries.

Item Type: Thesis (Undergraduate)
Additional Information: RSMt 621.312 423 Sak p
Uncontrolled Keywords: Baterai Li-ion , Hidrotermal, Li4Ti5O12, Nanowire
Subjects: T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial.
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User: EKO BUDI RAHARJO
Date Deposited: 27 Nov 2019 04:09
Last Modified: 27 Nov 2019 04:09
URI: https://repository.its.ac.id/id/eprint/72077

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